Water-cooled damper or valve.



Patented June 30, 1914.

2 SHBETS-SHEET 2.

INVENTOR w M 6 aw WM g LA L. L. KNOX.

WATER COOL-JD DAMPER OR VALVE.

APPLIGATIOH TILED APR. 1 1913. 1,1 02. 1 96.

UNITED sra'ilr s Parana anion.

LUTHER L. KNOX, OF AVALON, PENNSYLVANIA, ASSIGNOB, T6 KNOX PRESSED 8r. WELDED STEEL COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATKON OF PENNSYLVANIA.

WATER-COOLED DAMPER 01% VALVE.

V Patented June 30, 191

Application filed April 19, 1913. Serial No."762,229.

To all whom it may concern:

Be it known that I, LUTHER L. Knox,

a citizen of the United States, and resident of Avalon, Allegheny county, Pennsyh Vania, have invented a new and useful Water-Cooled Damper or Valve, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a transverse section of a furnace flue having my improved damper or valve applied thereto; Fig. 2 is a longitudinal section of the some; Fig. 3 is a horizontal longitudinal section; and Figs. 4 and 5 are views .similar respectively to Figs. 1 and 2, but showing a modification.

My invention has relation to water-cooled dampers or valves particularly adapted for use in furnace fines, and is designed to provide a simple and etlicient damper or valve of this character.

The nature of my invention will be best understood by reference to the accompanying drawings, in which I haveshown two different embodiments thereof, and which will now be described, it being premised, however, that various changes can be made in the details of construction and arrange- .ment of the parts without departing from the spirit and scope of my invention as defined in the appended claims.

Referring first to that form of my invention shown in Figs. 1, 2 and 3, the numeral 2 designates the masonry walls of a furnace fine, and the refractory lining 3. 4 designates the water-cooled damper or valve which is of hollow rectangular form, and isdesigned to be. kept filled with cooling water circulated thercthrough. order to form seats for the edges of the valve when in its closed position. the side walls of the flue end of the refractory lining 3 are formed with the offsets 5 and 6, these two oitsets being out of transverse alinement with each other to such an extent that the end wall 5 of the offset recess 0 will form a. seat for one edge portion of the valve wall, and the opposite end wall 6 ofthe offsetseat 6 will form a seat or abutment for the opposite'edge of the valve. These offset recesses are of sufficient extent. lengthwise of the fine to permit the valve to turn to an open position at right angles to the closed position, as shown in dotted lines in Fig. 3. In order to form a sealing seat for the bottom edge of the val e. the bottom wall of the flue and lining has the cut-away portions '7 and 8, so arranged that the wall 7 of the portion 7 is in tran. verse alinement with the seating wall 5,

and the wall. 8 of the portion 8 is in trans verse alinement with'the seating wall 6. The longitudinal walls 7 and 8 of these cut-away portions are sufliciently out of longitudinal alinement to form opposite seating surfaces for the valve when turned to the full open position shown in dotted lines in Fi i. 3. The valve is mounted to oscillate upon a vertical shaft 9, which is stepped in a suitable bearing 10 at its lower end, and which is shown as having the ball bearing ll above the valve. This ball bearing is interposed between the upper end of an. upwardly' extending central sleeve 12 of a water pan l3 seated in the top wall of the flue, and the top member of an inverted cup 14. This cup member 14 is secured to a hollow sleeve 15 which surrounds the up-. per portion of the shaft 9 but communicates at its lower end with the interior of the valve at the top of the latter. The cup member 14 and the sleeve 12 form cooperating gas sealing members, the. opening be-' tween which is sealed by the water in the pan 13. The shaft 9 is made hollow for the introduction of the cooling water, havinga suitable supply connection 16 at its upper end. The 'ater passes downwardly through this hollow shaft 9, and escapes at' the lower portion of the valve into the interior thereof through the discharge arms 17. As it becomes heated it rises to the upper portion of the valve and thence passes into the sleeve 13, (fgnnected to the upper portion of this sleeve is a discharge pipe 18, which extends down\vg ;d l, into" the water pan 13. The

upper edge of the valve may be sealed in a somewhat similar manner to its lower edge by means of downward pro ect1ons 22 and p 23 on the bottom of" thc'water pan 13. These projectic are arranged out of transverse alinemcm; with each other in the manner shown in Figs. 1 and 2. The water pan provides means for the retention of a considerable body oi water therein above the damper or valve; and the construction and arrange ment'of the top bearing in connection with this water pan is such as to form an efficient seal against.- the escape of any hot air or gases from the line by passing upwardly around the sleeve 15.

Figs. 4 and show a simpler form of my invention, in which the valve or damper 4c is of similar form to that firstdescribed, but is not provided with seating abutments at either its lateral edges or at its top and bottom. In this form the water pan 13 is shown as seated upon the top of the flue wall instead of being settherein as in the form first described. The other parts shown in this figure are similar to those first described, and are given'the same reference numeral with the letter a added thereto.

The advantages of my invention will be a parentsince it provides a simple and e cient iorm of water-cooled damper or valve, in' which provision is made tor the presence therein at all times of a relatively arge body o b'eooling water; which can be readily and easily operated; which is' pro vided with anetlective seal against the escape of gases around its operating connections; and which can be readily made to coal at its edges if desired.

What I claim is i 1. The combination with a hollow wateroooled dam r or valve, a hollow actuating shaft exten mg, and arranged to discharge water into said valve, a hollow sleeve comwater pan seated above the damper or valve and through which the shaft and sleeve extend,

and the sleeve having an overflow arranged to discharge into said pan, said sleeve and shaft having within the pan cooperating gas-sealing members, the opening between which is sealed by the water in the pan, substantially as described.

2. The combination with a flue or dis charge having its lateral walls provided with offset recesses, of a damper or valve for controlling said flue and said valve being mounted to swing on a vertical axes arranged to seat at its edges against 0,90 site vertical end walls of said recesses, the closed bottom wall of the flue havingidg pressions, the opposite end walls of w 1' form seating abut-ments for the lower portion of the valve in one position thereof, and opposite longitudinal walls which form seating abutments for the lower edge of the valve in another position thereof; substantially. as described.

3. The combination with a flue or (115 charge having its lateral walls provided with offset recesses, of a damper or valve for controlling said flue and said valve being mounted to swing on a vertical axis and arranged to seat at its edges against opposite vertical. end walls of said recesses, and the closed bottom wall of the flue having depressions, the opposite end walls of which form seating abutments for the lower portion of the valve in one posit-ion thereof,

and opposite longitudinal walls which form seating abutments for the lower edge of the valve in another position thereof, and the top of the flue having seating abutments for the upper edge portion 0 the valve; substantially as described.

4. The combination with a flue or dis charge having its lateral walls provided with ofi'set recesses, of a damper or valve for controlling said flue and arran ed to seat at its edges against opposite en walls of said recesses, and the bottom wall of the flue having depressions, the opposite end walls of which form seating abutments for the lower portion of the valve in one position thereof, and opposite longitudinal walls which form seatin abutments for the lower edge of the valve in another position thereof, and a water pan seated. upon the top of the flue and having depending projections which form seats or abutments at the upper edge portion of the valve; substantially as described.

In. testimony whereof, I have hereunto set my hand.

H. M. Gorwm,

GEO. H. PARMELEE. 

